Add the aclocal.m4 as acinclude.m4

Index: quilt-0.45/acinclude.m4
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ quilt-0.45/acinclude.m4	2006-08-06 23:18:56.000000000 +0200
@@ -0,0 +1,64 @@
+dnl Allow configure to specify a specific binary
+dnl 1: Environment variable
+dnl 2: binary name
+dnl 3: optional list of alternative binary names
+dnl 4: optional list of additional search directories
+AC_DEFUN([QUILT_COMPAT_PROG_PATH],[
+  m4_define([internal_$2_cmd],[esyscmd(ls compat/$2.in 2>/dev/null)])
+
+  AC_ARG_WITH($2, AC_HELP_STRING(
+    [--with-$2], [name of the $2 executable to use]
+                 m4_if(internal_$2_cmd,[],[],[ (use --without-$2
+                          to use an internal mechanism)])),
+  [
+    if test x"$withval" = xnone; then
+      AC_MSG_ERROR([Invalid configure argument.  use --without-$2])
+    fi
+    if test x"$withval" != xno; then
+      AC_MSG_CHECKING(for $2)
+      $1="$withval"
+      if test -e "$$1"; then
+	if test ! -f "$$1" -a ! -h "$$1" || test ! -x "$$1"; then
+	  AC_MSG_ERROR([$$1 is not an executable file])
+	fi
+      fi
+      AC_MSG_RESULT([$$1])
+      if test ! -e "$$1"; then
+        AC_MSG_WARN([$$1 does not exist])
+      fi
+      COMPAT_SYMLINKS="$COMPAT_SYMLINKS $2"
+    fi
+  ],[
+    m4_if([$3],[],[
+      AC_PATH_PROG($1,$2,,$PATH:$4)
+    ],[
+      AC_PATH_PROGS($1,$3,,$PATH:$4)
+      if test -n "$$1" -a "`expr "$$1" : '.*/\([[^/]]*\)$'`" != "$2"; then
+	COMPAT_SYMLINKS="$COMPAT_SYMLINKS $2"
+      fi
+    ])
+    m4_if([$4],[],[],[
+      if test -n "$$1"; then
+	as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+        for dir in "$4"; do
+          if test "`dirname $$1`" = "$dir"; then
+            COMPAT_SYMLINKS="$COMPAT_SYMLINKS $2"
+	    break
+	  fi
+        done
+	IFS="$as_save_IFS"
+      fi
+    ])
+  ])
+  if test -z "$$1"; then
+    m4_if(internal_$2_cmd,[],[
+      AC_MSG_ERROR([Please specify the location of $2 with the option '--with-$2'])
+    ],[
+      AC_MSG_WARN([Using internal $2 mechanism.  Use option '--with-$2' to override])
+      COMPAT_PROGRAMS="$COMPAT_PROGRAMS $2"
+      $1=$2
+      INTERNAL_$1=1
+    ])
+  fi
+  AC_SUBST($1)
+])